6 Li(s) + N2(g) → 2 Li3N(s)

This is the equation I have to use for solving 3 questions relating to Stoichiometry. This stuff is hard. If you could help me that would be great. I have a whole nother page too.

A.) The number of moles Li required to make 46.4 g of Li3N.

B.) The mass in grams of Li3N produced from 3.65 g Li.

C.) The number of moles lithium needed to react with 7.00 grams of N2.

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2